Final answer:
The voltage drop of conductors carrying alternating current in PVC is less than that of identical conductors in steel, aluminum, EMT, and rigid conduits due to the higher resistance of these materials.
Step-by-step explanation:
The voltage drop of conductors carrying alternating current in PVC will be less than that of identical conductors in Steel conduit, Aluminum conduit, EMT conduit, and Rigid conduit.
This is because PVC is an insulating material, meaning it has high resistance to the flow of electric current. As a result, less voltage is lost as the current passes through the PVC conductor compared to the conductors made of steel, aluminum, EMT, and rigid materials which have lower resistance.